Added missing libsw library

external/libsdf/libsw/singlio.c

@@ -0,0 +1,35 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include "protos.h"
+#include "mpmy.h"
+#include "Msgs.h"
+#include "singlio.h"
+
+static int singl_auto_flush = 1;
+
+int singlAutoflush(int new){
+    int ret = singl_auto_flush;
+    singl_auto_flush = new;
+    return ret;
+}
+
+int singlPrintf(const char *fmt, ...){
+    va_list ap;
+    int ret;
+
+    if(MPMY_Procnum() != 0 )
+	return 0;
+    va_start(ap, fmt);
+    ret = vfprintf(stdout, fmt, ap);
+    va_end(ap);
+    if( singl_auto_flush )
+	fflush(stdout);
+    return ret;
+}
+
+void singlFflush(void)
+{
+    if( MPMY_Procnum() != 0 )
+	return;
+    fflush(stdout);
+}